Font cyberbit.ttf, included with QB64 (version 0.92 and up), is required to facilitate the IME(in Chinese settings) only. The 12.7 MB font is free for non-commercial use and is not loaded unless the user switches to the Input Mode Editor. Set to "UNICODE".

QB64 can use several Windows fonts when cyberbit is not present so it is not necessary to include with program packages.

An important difference between INKEY$ and _KEYHIT is how they work when CTRL, ALT or SHIFT are used. INKEY$ returns a different code if you hold down CTRL, ALT or SHIFT before pressing F1 (for example). _KEYHIT will return the same code regardless of which modifiers were used but you can check _KEYDOWN to see which modifying keys are being used.

Keyboards with an Alt Gr key note: _KEYHIT may return both Alt (100307) and Ctrl (100306) codes when AltGr key is pressed or released.